FIELD: chemistry.
SUBSTANCE: codeine ion associate, which is formed with eosin quantitatively extracted with toluene from the aqueous solution. Ion associate luminescence spectrum is a broad band with a maximum at 550 nm. Maximum luminescence intensity is achieved when the ion associate extraction from an aqueous solution having a pH of 7.5-.9.0 and eosin concentrations 0.02-0.05 mg/ml. The method allows more than 7500 times lower limit of detection of codeine.
EFFECT: lowering the detection limit of codeine in complex mixtures.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF CODEINE IDENTIFICATION | 2013 |
|
RU2523408C1 |
| REAGENT FOR DETERMINATION OF CATION PARTICLES BY EXTRACTION PHOTOMETRY | 0 |
|
SU1749786A1 |
| METHOD OF DETECTION OF SILVER | 2003 |
|
RU2253618C1 |
| METHOD OF DETECTING GOLD | 0 |
|
SU1118903A1 |
| METHOD OF LUMINISCESCENT DETECTING OF COPPER | 0 |
|
SU972343A1 |
| METHOD OF LUMINESCENT DETERMINATION OF YTTRIUM IN ROCK | 1992 |
|
RU2054654C1 |
| METHOD OF COPPER DETERMINATION | 0 |
|
SU1797024A1 |
| SAFE EXTRACTION-FLUORIMETRIC METHOD OF DETERMINING SELENIUM IN WATER | 2015 |
|
RU2597769C1 |
| METHOD OF ETHIONEAMIDE QUANTITATIVE DETERMINATION | 1991 |
|
RU2027170C1 |
| METHOD FOR DETECTING SCANDIUM | 0 |
|
SU1017677A1 |
